Incandescent gas-burner.



No. 642,407. Patented Ian. 30, I900.

T. WILSON.

INCANDESCENT GAS BURNER.

(Application filed Oct. 4, 1899.)

(No Model.)

am M. 55 35 41w. 2 3 MM 43 m: NORRIS names so. mo'muma. wnsumqrom .1:

' valve.

UNITED STATES PATENT OFFICE.

THOMAS WILSON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE PENNSYLVANIA GLOBE GAS'LIGHT COMPANY, OF PENNSYLVANIA.

INCANDESCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 642,407, dated January 30, 1900.

Application filed October 4:, 1899. Serial No. 732,460. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS WILSON, acitizen of the United States, anda resident of the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Burners for Welsbach and other Incandescent Lights, of which the followingis a specification.

The object of the present invention is to provide a burner for Welsbach and other in candescent lights with simple, eiiicient, and reliable means for regulating the supply to the Bunsen tube in such manner that the regulation of the supply of gas and the regulation of the supply of air are independent of each other and maybe effected in any relative quantities for the production of the best results without disturbing the light. ,To

these and other ends the invention comprises the improvements hereinafter described and claimed.

The nature, characteristic features, and scope of the invention will be more fully understood from the following description taken in connection with the accompanying drawings, forming part hereof, and in Which- Figure 1 is a side elevational view of a burner embodying features of myinvention. Fig. 2 is a view, principally incentral section, drawn to an enlarged scale and illustrating details of construction. 'Fig. 3 is a top or plan view of Fig. 2, and Fig. 4 is a view illustrating portions of the burner detached.

In the drawings, 1 is a Bunsen tube provided near one end and in its side walls with air-inlets. To increase or diminish the ingress of air, there is provided arevoluble p'erforated sleeve 2, which may be turned so as to admit more or less air into the Bunsen tube, as is well understood by those skilled in the art. Superposed on the gas-supply pipe 3 there is a needle-valve 4, provided with suitable passages, as 5, through which gas escapes from the pipe 3 around the needlevalve at. The seat 6 of the needle-valve is adjusted endwise of the shank 7 of the needle- As shown, these parts are screwthreaded, and the seat is provided with handles or finger-pieces 8, so that when the valveseat 6 is screwed downward the needlervalve 4 penetrates itand restricts or even interrupts the passage of gasinto the Bunsen tube 1, which encircles the valve-seat. When the valve-seat is screwed upward, the needlevalve is withdrawn from this seat and the flow of gas is increased up to its maximum limit. vent turning of the mantle and afiord access to the finger-pieces 8, use is made of a yoke 9, supported by the pipe 3 and in its turn serving to support the Bunsen tube. The valve-seat 6 Works freely through an opening in the yoke.

In use the supply of air to the Bunsen tube is increased or diminished by the appropriate adjustment of the sleeve 2. The supply of gas to the Bunsen tube is adjusted by shifting the seat 6 in respect to the valve 4, as described. It will be noted that the shifting of the valve-seat in no wise operates to affect the adjustment of the air-supply. This is important, because the production of a heating flame of the proper character is dependent upon the regulation of the air and gas mixture, and the gas-pressure is in cities quite variable, so that the described provisions whereby accurate adjustment of the supply of gas in respect to and independently of the supply of air is essential.

It will be obvious to thoseskilled in the art to which the invention appertains that modifications may be made in details without departing from the spirit thereof. Hence I do not limit myself to the precise construction and arrangement of parts herein set forth and shown in the drawings; but,

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is

In a burner of the type specified the combination of a supply-pipe provided with a needle-valve and with apertures for the passage of gas past the needle-valve, a Bunsen tube provided with means for regulating the ingress of air, a valve-seat adj ustably mounted on the shank of the valve and extending into the Bunsen tube and a yoke for supporting the Bunsen tube in fixed position,whereby the regulation of the supply of gas is independent of the regulation of the supply of air, substantially as described.

' THOMAS WILSON.

Witnesses:

W. J. JACKSON, DORA STERNBERGER.

To support the Bunsen tube and pre- 

